Wet Chemical Synthesis of Ni-Al Nanoparticles at Ambient Condition

Abstract:

The synthesis of intermetallic Ni-Al nanoparticles by co-reduction approach of several organometallic precursors with sodium naphthelide in non-aqueous solution was studied. The state of the art in nanoparticles synthesisation is the selection of suitable precursors and the adaption of colloid chemistry to non-aqueous media at the room temperature under inert atmosphere. The reduction of an organometallic precursor, nickel (II) acetylacetonate, Ni(Acac)₂ as a source of Ni element of the intermetallic, and aluminum trichloride, AlCl₃ in tetrahydrofuran (THF) solution gave a black particles. The powder X-ray diffraction spectroscopy (pXRD) result shows an expansion of lattice parameter for FCC-Ni indicating the cooperation of Al atoms in Ni structures. The estimation value of Al concentration using Scherrer’s equation is 10 at%. The particles were investigated in more detail by hard X-ray photoemission spectroscopy (HX-PES). The HX-PES spectrums confirmed that the black particles has binding energy consistent to standard materials of Ni₃Al. The absence of organic residues shown by the Fourier-transform infrared, FTIR spectrometer indicates that the as prepared Ni-Al nanoparticles are free from by-products.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 442-447
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.442
• Online since: July 2012
• Authors: Nor Akmal Fadil, Saravanan Govindachetty, Hideki Yoshikawa, Yoshiyuki Yamashita, Shigenori Ueda, Keisuke Kobayashi, Toyokazu Tanabe, Toru Hara, Venkata Ramesh Gubbala, Hideyuki Murakami, Kazuhiko Noda, Hideki Abe
• Keywords: Heazlewoodite, Nickel Aluminides Nanoparticles, Room Temperature Synthesis, Sodium Naphthalide, Sulfur Contamination, Wet Chemical Synthesis

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